package com.itheima.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;

//      异常处理器
@RestControllerAdvice
@Slf4j
//      处理用户名存在问题
public class GlobalExceptionHandler {
        @ExceptionHandler(SQLIntegrityConstraintViolationException.class )
         public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
                if (ex.getMessage().contains("Duplicate entry")){
                        String[] s = ex.getMessage().split(" ");
                        String msg=s[2]+"已存在";
                        return R.error(msg);
                }
                return R.error("未知错误");
         }
    @ExceptionHandler(CustomException.class)

    //处理的是
    public R<String> exceptionHandler(CustomException ex){
        log.error(ex.getMessage());
        return R.error(ex.getMessage());
    }
   }



